53105533140 has 192 divisors, whose sum is σ = 171238394880. Its totient is φ = 12195446400.

The previous prime is 53105533111. The next prime is 53105533141. The reversal of 53105533140 is 4133550135.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 53105533098 and 53105533107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53105533141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4521075 + ... + 4532805.

It is an arithmetic number, because the mean of its divisors is an integer number (891866640).

Almost surely, 2^53105533140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53105533140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85619197440).

53105533140 is an abundant number, since it is smaller than the sum of its proper divisors (118132861740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53105533140 is a wasteful number, since it uses less digits than its factorization.

53105533140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11811 (or 11771 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 53105533140 in words is "fifty-three billion, one hundred five million, five hundred thirty-three thousand, one hundred forty".